Adopt the new Diff type in bootstrap and print whether variables are added, changed, or removed
Adopt the new Diff type in bootstrap and print whether variables are added, changed, or removed

Co-Authored-By: Paula <62e52d2ac616f25dfddd0968a947fa7e84e5c086@buildkite.com>

buildkite/agent,buildkite/agent,buildkite/agent